Battery storageProject Lake Bonney Battery Energy Storage System
The Lake Bonney BESS Final Report provides technical, financial performance and key operational events for the project from its development to completion. Details on its second year of operation in December 2021 are also provided. The project was installed alongside the Lake Bonney wind farms that have a combined capacity of 278.5MW.
System availability for the Lake Bonney BESS has remained high throughout the first two years of operations, with a slight decrease in reported availability due to a change in reporting method and not a decline in performance.
Despite a number of AEMO constraints including the Lake Bonney BESS, they have rarely impacted upon its dispatch in the first two years of operation, with the majority of constraints that have impacted the dispatch of the BESS occurring during islanded network conditions. Limited impacts have also been observed for the transformer load management constraint applied at site, with dispatch decisions of the BESS impacted around only 10 times during the first two years of operations.
There were no safety or environmental incidents of note throughout the development, construction, commissioning, and operations of the Lake Bonney BESS to date, highlighting the strong safety performance of Iberdrola Australia at the Lake Bonney site and its existing wind farms.